<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/bootstrap.css">
    <style>
        body{
            padding: 0;
            margin: 0;
        }
    </style>
</head>
<body>
<div class="container col-md-12" style="height: 300px">
    <div class="col-md-3" style="background-color: #1b6d85;height: 300px"></div>
    <div class="col-md-9" style="background-color: #4F3E8A;height: 300px"></div>
</div>
</body>
</html>